Chlorohydrination reaction system and reaction method

A reaction system, chlorohydrinization technology, applied in the direction of organic chemistry, the introduction of hydroxyl and halogen preparation, etc., can solve the problems of reducing by-products, unable to increase the yield of chlorohydrins, etc., and achieve the effect of large operating flexibility, small investment, and easy control

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the improvement of each process and equipment cannot increase the yield of chlorohydrins, and the reduction of by-products is also very limited

Method used

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  • Chlorohydrination reaction system and reaction method
  • Chlorohydrination reaction system and reaction method
  • Chlorohydrination reaction system and reaction method

Examples

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Effect test

Embodiment 1

[0049] Such as figure 1 and image 3 Shown, a kind of chlorohydrination reaction system. The system comprises: 50 chlorine dissolving sections and chlorohydrinization reaction sections connected in sequence; the water inlet pipeline is connected to the inlet pipeline of the first chlorine dissolving section; the chlorine gas inlet pipeline is connected to the inlet pipeline of each chlorine dissolving section; the chlorine dissolving section outlet is connected to the chlorine The inlet of the alcoholization reaction section is connected, the outlet of the chlorohydrination reaction section is connected to the inlet of the next chlorine gas dissolution section; the propylene inlet pipeline is connected to the inlet pipeline of each section of the chlorohydrination reaction section; the alkali liquor inlet pipeline is connected to each section of the chlorohydrination reaction section; The outlet is connected to the chloropropanol outlet line.

[0050] The chlorine gas dissol...

Embodiment 2

[0056] Such as figure 2 and image 3 Shown, a kind of chlorohydrination reaction system. The system comprises: 30 chlorine dissolving sections and chlorohydrinization reaction sections connected in sequence; the water inlet pipeline is connected to the inlet pipeline of the first chlorine dissolving section; the chlorine gas inlet pipeline is connected to the inlet pipeline of each chlorine dissolving section; the chlorine dissolving section outlet is connected to the chlorine The inlet of the alcoholization reaction section is connected, and the outlet of the chlorohydrination reaction section is connected to the inlet of the next chlorine gas dissolution section; the propylene inlet pipeline is connected to the inlet pipeline of each chlorohydrination reaction section; the lye inlet pipeline is connected to the inlet pipeline of each chlorohydrination reaction section; The outlet of the reaction section is connected with the outlet pipeline of chloropropanol.

[0057] The...

Embodiment 3

[0063] Same as embodiment 2, the only difference is that N is 80 segments.

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Abstract

The invention discloses a chlorohydrination reaction system and a chlorohydrination reaction method. The system comprises N sections of chlorine dissolving sections and chlorohydrination reaction sections which are connected in sequence, a water inlet pipeline is connected with a first chlorine dissolving section inlet pipeline; a chlorine inlet pipeline is connected with each section of chlorinedissolving section inlet pipeline; a chlorine dissolving section outlet is connected with a chlorohydrination reaction section inlet, and a chlorohydrination reaction section outlet is connected witha next chlorine dissolving section inlet; a propylene inlet pipeline is connected with an inlet pipeline of each chlorohydrination reaction section; an alkali liquor inlet pipeline is connected with an inlet pipeline of each chlorohydrination reaction section or connected with each chlorohydrination reaction section; an outlet of the last chlorohydrination reaction section is connected with a chloropropanol outlet pipeline; N is 1 to 100. According to the method, the chlorohydrin yield can be effectively improved, and meanwhile, the generation of byproducts is reduced.

Description

technical field [0001] The invention relates to the technical field of petrochemical synthesis devices, in particular to a chlorohydrination reaction system and a reaction method. Background technique [0002] Propylene oxide is an important basic organic chemical raw material and an important industrial derivative of propylene. It is mainly used in the production of polymerase polyol, propylene glycol and various nonionic surfactants, etc., and has a wide range of uses. [0003] At present, the production of propylene oxide in my country mainly adopts the chlorohydrin process. The production of propylene oxide by the chlorohydrin method includes chlorohydrination of propylene to produce chloropropanol, saponification of chloropropanol to produce crude propylene oxide, and refining of crude propylene oxide to obtain qualified propylene oxide, among which chlorohydrination of propylene to produce chloropropanol is the key production step . [0004] In order to increase the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/66C07C31/36
CPCC07C29/66C07C31/36
Inventor 李东风李琰刘德全罗淑娟
Owner CHINA PETROLEUM & CHEM CORP
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